Vertex Standard FT-1000MP Downloading, Status Update Data Organization, Status Flags Bytes 1~

CAT System Computer Control

DOWNLOADING

MARK-V FT-1000MP DATA

On command, the MARK-VFT-1000MPwill down- load some or all (1,863 bytes) of its operational data. This data block contains all current transceiver settings. In addition, the current meter indication (Tx or Rx) is read, digitized and returned as well. This provides a wealth of information in near real-time that can be pro- cessed by your program or the running application for control purposes or display readouts. By regular or in- termittent requests for this data, the program (and you) can be kept continuously up-to-date on the status of the MARK-VFT-1000MPoperating environment.

The following four commands cause the MARK-VFT-1000MPto download various operational and in- ternally stored settings via the CAT port:

Status Update (10H) - causes the transceiver to return all or portions of its RAM table (up to 1,863 bytes).

Status Flags Request (FAH) - obtains only the first 6 bytes (the Status Flags), plus 2 extra “Model ID” bytes (10H and 00H).

Read Meter (F7H) - returns the meter deflection (0

-FFH) repeated in four bytes, followed by one “filler” byte (F7H).

Pacing Command (0EH) - Each byte of returned data may be delayed by an interval determined by this command (0 to 255 ms in 1-ms steps). This delay is initially zero until the Pacing command is sent (see note below).

Note: Pacing allows returned data to be read and processed by slower computers. However, set it as short as your computer will allow, to minimize the inconvenience of the delay. Sending all 1,863 bytes requires just under 5 seconds with zero- length delay selected, but over 5 minutes if the maximum delay is selected!

Parameter	Bytes	Data	Comment
	Returned	Returned
U = 00H	1,863	All Status	See above Box
		Updata Data	- Pacing Command
U = 01H	1	Memory	Current or Last
		Channel No.	Selected Memory
U = 02H	16	Current
		Operating Data	See the Tables on
		(VFO or Memory)
			page 91 and 92 for
U = 03H	32	Main VFO-A &	16-byte data record
			structures
	(2 x 16)	Sub VFO-B Data
U = 04Hø	16	Memory Data
X =	NA	X = Momory (1~99, P1 ~ P5, Q1 ~ Q5)
00 ~ 71H		ø only used when U = 04H

STATUS UPDATE DATA ORGANIZATION

An overview of the Status Update Data that can be returned to the PC in response to one of the Status Update requests (opcodes 10H, FAH, F7H, or 0EH) is shown next page. The 1,863-byte block begins with six bytes, each containing one-bit state Status Flags (A), for a total of 48 bits, followed by one byte indicat- ing the current (or last selected) Memory Channel (B), followed by 116 x 16-byte data records: one for the current Operating Data (C), one each for VFO-A (D) and VFO-B (E), and one for each of the 113 memories (F).

Of the four commands that cause Status Update to be returned, remember that only opcode 10H (with its last argument set to zero) returns all of the data (see bottom left of this page).

STATUS FLAGS (BYTES 1~ 6)

Each of the first six bytes are subdivided into 1-bit flag fields: if a bit is set (1), the function is enabled (on); and if reset (0), the function is disabled (off). These flags reflect the current states of various transceiver functions, most of which appear in the radio display as indicators or LEDs. The Status Flags command returns these bytes for use in the control program (you could replicate these indicators on the computer display, or else use them as control flags for routines, etc.). Bit offsets for all six bytes is shown on page 89.

MEMORY CHANNEL DATA (BYTE 7)

The seventh Update Data Byte contains a binary value from 00 ~ 70H, corresponding to the current memory channel number on the display. Only this byte is returned by sending the Status Update command with the first parameter set to 1. The chart on page 90 lists the corresponding hexadecimal codes for memory channels 01 ~ 99, P1 ~ P9, and QMB memories 1 ~ 5.

16-BYTE DATA RECORDS (BYTES 8 ~ 1863)

The remainder of the operational data returned by the Status Update command consist of 16-byte data records, indicating VFO and memory-specific selec- tions. The first of these records is for the current dis- play, followed by the VFO-A, VFO-B, and then the 113 memory channels, from lowest to highest. Please re- view the table at the top left column on page 91, which outlines the structure of a 16-byte data record. Each byte is identified by its offset from the start (base ad- dress) of the record. A further breakdown of each byte offset is also provided.

Note that this same 16-byte data record format is used for the VFO and Memory Data as well, unless you are currently operating on a retuned memory (“M TUNE” displayed).

page 88 MARK-V FT-1000MP Operating Manual